Electric-fan control.



Patented A pr. 15

GUSTQF OLSON, OF CHICAGO, ILLINOIS, ASSIGNOR OF ONE-HALF TO WILLARD M.

. MGEWEN, OF CHICAGO, ILLINOIS.

ELECTRIC-FAN CONTROL.

Specification of Letters Patent.

Patented Apr. 15, 1919.

To all whom it may concern: 7

Be it known that, I, GUSTAF OLsoN, a citizen of the United States of America, and a resident of Chicago, county of Cook,

and State of Illinois, have invented certain new and usefulImp-rovements in Electric- Fan Controls, of which the following is a specification. a

The main objects of this invention are to provide an electric fan, of the type shown in- Greenberg and Olson Patent No. 1,125,684, ranted January 19, 1915, and in the Willard McEwen Patent No. 1,214,198, granted January 30, 1917 with improved means for controlling the various movements thereof,

and to provide means of this kind which is not to obscure some of the other mechanism.

Fig. 2 is a side elevation of the same.

Fig. 3 is a detail of the sleeve member which carries a wavelike track, showing the formation of the locking notch thereon.

Fig. 4 is an enlarged sectional detail of the connection of the locking paWl or finger to the support. 1

The fan to which this improved controlling mechanism is herein shown to be applied is of a type more fully described and claimed in my copending application, Serial No. 112,090, filed July 29, 1916. Such a fan comprises blower mechanism 6 tiltably mounted on a shaft or member 7 by having lugs 8 depending from a motor casing 9 pivotally connected to arms 10 formed on the member 7. The member 7 supports the blower mechanism 6 on the base or support 11 in such manner that the blower mechanism may be caused to move in several different ways, as will be hereinafter more fully explained. A sleeve 12 is journaled on the support 11 concentrically of the member 7, and carries an outwardly disposed annular flange 13 of wavelike form providing a track 14 with which rollers 15. journaled on the motor casing 9 are adapted'to coact totilt the blower mechanism in a vertical plane during the relative rotation of the sleeve 12 and member 7. The relative rotation of said sleeve and member is caused by a pinion 16 driven by the fan motor and meshing with a rack 17 formed on the periphery of the flange 13.

- ,The principal movements of the fan are a simple up and down tilting in a vertical plane, a tilting up and down in a vertical plane simultaneously with ahorizontal rotations of the entire mechanism about a vertical axis, and a tilting up and down in a vertical plane at the same time the whole mechanism is oscillating back and forth in a horizontal plane. The first of these movements is efiected by locking the member 7 to the support 11; the second by locking the sleeve 12 to the support 11; and the third by restricting the rotation of the member 7 when both it and the sleeve are released from locked engagement with the support 11. y

The controlling means for these move ments of the fan comprise a finger or pawl 18 and spring 19. The finger 18 is pivotally mounted on the support 11 by means of a pin 20, so that it may be swung to have the end thereof engage a notch 21 formed on the end of one of the arms 10, or the notch 22 formed on the sleeve 12 under the flange 13. When the finger is in engagement with the notch 21, the member 7 is locked against rotation relative to the support 11, whereas the sleeve 12 is free to rotate, and the blower mechanism tilts up and down. When the finger is set to engage the notch 22, the sleeve 12 is locked against rotation relative to the support, whereas the member 7 is free to rotate so that the blower mechanism is caused to rotate in a horizontal plane and at the same time tilt up and down.

The finger 18 is pivoted between ears or lugs 23, and the pin 20 has threaded connection with one of the lugs so that the pin when tightened forces the lugs 23 to grip the finger 18 and hold it either in its retracted position, as shown in full outline in Fig. 1, or in engagement with one or the other of the notches 21 and 22, as indicated in dotted outline in Fig. 1.

The spring 19 is adapted to hook in a lug 24 formed on the end of the other arm 10, and a lug 25 formed on the support 11, when the finger 18 is in its retracted position, so

as to cause the fan to oscillate back and forth in a horizontal plane.

The tilting of the blower mechanism up and down sets up gyratory forces which, when both the member 7 and sleeve 12 are. free to rotate, react to cause the blower mechanism to oscillate back and forth in a horizontal plane, as is more fully explained in the \Villard M. McEwen Patent No. 1,214,198, granted January 30, 1917. The oscillations are reversed whenever the tilting is reversed, so that the action is substantially automatic.

, The spring 19 is, therefore, made comparatively light and is adapted to merely restrict the oscillations of the blower mechanism to a certain fixed angularity.

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of this invention as defined by the following claims.

I claim:

1. In an air circulating device, the combination of a support, a pair of members rotatably mounted on said support independently of each other, motor driven blower mechanism tiltably mounted on one of said members, coacting means on said blower mechanism and the other said member, adapted to cause said blower mechanism to tilt in a plane transverse to the pivotal connection to said one member during a rela tive rotation of said members, means for causing a relative rotation of said members, and a finger shiftably mounted on said support and adapt-ed to be shifted to engage one or the other of said members for locking it against rotation relative to said support.

2. In an air circulating device, the combination of a support, a pair of members rotatably mounted on said support independently of each other, motor driven blower mechanism tiltably mounted on one of said members, coacting means on said blower mechanism and the other said member, adapted to cause said blower mechanism to tilt in a plane transverse to the pivotal con nection to said one member during a relative rotation of said members, means for causing bination of a support, a pair of members rotatably mounted on said support independently of each other, motor driven blower mechanism tiltably mounted on one of said members, coacting means on said blower mechanism and the other said member, adapted to cause said blower mechanism to tilt in a plane transverse to the pivotal connection to said one member during a relative rotation of said members, means for causing a relative rotation of said members, each of said members having a notch formed in an exposed part thereof, and a finger pivotallymounted on said support and adapted tobe set with the end thereof in engagement with one or the other of said notches for holding the correspondingmember against rotation relative to said support.

4C. In an air. circulating device, the com-- bination of a support, a shaft journaled on said support, a sleeve rotatably mounted on said support concentrically of said .shaft and havingan annular track of wavelike form carried thereon, arms on said shaft extending outwardly overhanging said track, motor driven blower mechanism, lugs on said mechanism pivotally supporting said blower mechanism on said arms, means on said blower mechanism adapted to coact with said track for causing'a tilting of said blower mechanism during the relative rotation of said sleeve and shaft, other means for causing a relative rotation of said sleeve and shaft, said sleeve and one of said arms having notches formed therein, and a finger pivotally mounted on said support adapted to be set to engage one or the other of said notches for holding said shaft or sleeve against rotation relative to said support.

GUSTAF OLSON.

Copies of this'patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

' Signed at Chicago this 22d day of July, 

